OilfieldToolsNet/opm-simulators
4
0
Fork 0
mirror of https://github.com/OPM/opm-simulators.git synced 2025-02-25 18:55:30 -06:00
Code Issues Packages Projects Releases Wiki Activity

Moved some calculations to computeExplicitData() method.

Browse Source
This commit is contained in:
Atgeirr Flø Rasmussen 2013-05-23 15:08:21 +02:00
parent e5bd6547ae
commit 70ebd21cfd
2 changed files with 109 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

116
opm/autodiff/ImpesTPFAAD.cpp
View File

@ -28,6 +28,13 @@
#include <iomanip>
// Repeated from inside ImpesTPFAAD for convenience.
typedef AutoDiff::ForwardBlock<double> ADB;
typedef ADB::V V;
typedef ADB::M M;
namespace {
std::vector<int>
buildAllCells(const int nc)
@ -86,14 +93,37 @@ namespace {
return G;
}
V computePerfPress(const UnstructuredGrid& grid, const Wells& wells, const V& rho, const double grav)
{
const int nw = wells.number_of_wells;
const int nperf = wells.well_connpos[nw];
const int dim = grid.dimensions;
V wdp = V::Zero(nperf,1);
ASSERT(wdp.size() == rho.size());
// Main loop, iterate over all perforations,
// using the following formula:
// wdp(perf) = g*(perf_z - well_ref_z)*rho(perf)
// where the total density rho(perf) is taken to be
// sum_p (rho_p*saturation_p) in the perforation cell.
// [although this is computed on the outside of this function].
for (int w = 0; w < nw; ++w) {
const double ref_depth = wells.depth_ref[w];
for (int j = wells.well_connpos[w]; j < wells.well_connpos[w + 1]; ++j) {
const int cell = wells.well_cells[j];
const double cell_depth = grid.cell_centroids[dim * cell + dim - 1];
wdp[j] = rho[j]*grav*(cell_depth - ref_depth);
}
}
return wdp;
}
} // anonymous namespace
namespace Opm {
// Repeated from inside ImpesTPFAAD for convenience.
typedef AutoDiff::ForwardBlock<double> ADB;
typedef ADB::V V;
typedef ADB::M M;
ImpesTPFAAD::ImpesTPFAAD(const UnstructuredGrid& grid,
@ -113,9 +143,14 @@ namespace Opm {
, well_flow_residual_ ()
, well_residual_ (ADB::null())
, total_residual_ (ADB::null())
, qs_ (ADB::null())
{
}
void
ImpesTPFAAD::solve(const double dt,
BlackoilState& state,
@ -126,6 +161,8 @@ namespace Opm {
well_flow_residual_.resize(np, ADB::null());
// Compute dynamic data that are treated explicitly.
computeExplicitData(dt, state, well_state);
// Compute relperms once and for all (since saturations are explicit).
DataBlock s = Eigen::Map<const DataBlock>(state.saturation().data(), nc, np);
ASSERT(np == 2);
@ -163,12 +200,12 @@ namespace Opm {
const double r = residualNorm();
std::cout << std::setw(9) << it
<< std::setw(18) << r << std::endl;
resTooLarge = (r > atol) && (r > rtol*r0);
it += 1;
std::cout << std::setw(9) << it
<< std::setw(18) << r << std::endl;
}
if (resTooLarge) {
@ -179,6 +216,64 @@ namespace Opm {
}
}
void
ImpesTPFAAD::computeExplicitData(const double dt,
const BlackoilState& state,
const WellState& well_state)
{
const int nc = grid_.number_of_cells;
const int np = state.numPhases();
const int nw = wells_.number_of_wells;
const int nperf = wells_.well_connpos[nw];
const int dim = grid_.dimensions;
const std::vector<int> cells = buildAllCells(nc);
// Compute relperms.
DataBlock s = Eigen::Map<const DataBlock>(state.saturation().data(), nc, np);
ASSERT(np == 2);
kr_ = fluid_.relperm(s.col(0), s.col(1), V::Zero(nc,1), buildAllCells(nc));
// Compute relperms for wells. This must be revisited for crossflow.
DataBlock well_s(nperf, np);
for (int w = 0; w < nw; ++w) {
const double* comp_frac = &wells_.comp_frac[np*w];
for (int j = wells_.well_connpos[w]; j < wells_.well_connpos[w+1]; ++j) {
well_s.row(j) = Eigen::Map<const DataBlock>(comp_frac, 1, np);
}
}
const std::vector<int> well_cells(wells_.well_cells,
wells_.well_cells + nperf);
well_kr_ = fluid_.relperm(well_s.col(0), well_s.col(1), V::Zero(nperf,1), well_cells);
// Compute well pressure differentials.
// Construct pressure difference vector for wells.
const double* g = geo_.gravity();
if (g) {
// Guard against gravity in anything but last dimension.
for (int dd = 0; dd < dim - 1; ++dd) {
ASSERT(g[dd] == 0.0);
}
}
V cell_rho_total = V::Zero(nc,1);
const Eigen::Map<const V> p(state.pressure().data(), nc, 1);
for (int phase = 0; phase < np; ++phase) {
const V cell_rho = fluidRho(phase, p, cells);
const V cell_s = s.col(phase);
cell_rho_total += cell_s * cell_rho;
}
V rho_perf = subset(cell_rho_total, well_cells);
well_perf_dp_ = computePerfPress(grid_, wells_, rho_perf, g ? g[dim-1] : 0.0);
}
void
ImpesTPFAAD::assemble(const double dt,
const BlackoilState& state,
@ -231,10 +326,8 @@ namespace Opm {
}
well_to_perf.setFromTriplets(w2p.begin(), w2p.end());
const M perf_to_well = well_to_perf.transpose();
// Construct pressure difference vector for wells.
const V well_perf_dp = V::Zero(well_cells.size()); // No gravity yet!
// Finally construct well perforation pressures and well flows.
const ADB p_perfwell = well_to_perf*bhp + well_perf_dp;
const ADB p_perfwell = well_to_perf*bhp + well_perf_dp_;
const ADB nkgradp_well = transw * (p_perfcell - p_perfwell);
const Selector<double> cell_to_well_selector(nkgradp_well.value());
@ -406,8 +499,7 @@ namespace Opm {
ops_.internal_faces);
const V nkgradp = transi * (ops_.ngrad * p.matrix()).array();
const V well_perf_dp = V::Zero(well_cells.size()); // No gravity yet!
const V p_perfwell = (well_to_perf*bhp.matrix()).array() + well_perf_dp;
const V p_perfwell = (well_to_perf*bhp.matrix()).array() + well_perf_dp_;
const V nkgradp_well = transw * (p_perfcell - p_perfwell);
const Selector<double> cell_to_well_selector(nkgradp_well);

5
opm/autodiff/ImpesTPFAAD.hpp
View File

@ -88,8 +88,13 @@ namespace Opm {
ADB total_residual_;
std::vector<V> kr_;
std::vector<V> well_kr_;
ADB qs_;
V well_perf_dp_;
// Methods for assembling and solving.
void computeExplicitData(const double dt,
const BlackoilState& state,
const WellState& well_state);
void assemble(const double dt,
const BlackoilState& state,
const WellState& well_state);